US10906162B2 - Screw clamping device - Google Patents

Screw clamping device Download PDF

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Publication number
US10906162B2
US10906162B2 US15/874,073 US201815874073A US10906162B2 US 10906162 B2 US10906162 B2 US 10906162B2 US 201815874073 A US201815874073 A US 201815874073A US 10906162 B2 US10906162 B2 US 10906162B2
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US
United States
Prior art keywords
clamping
unit
cylinder
pressing
screw
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Active, expires
Application number
US15/874,073
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English (en)
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US20190105763A1 (en
Inventor
Han-Hsiang Chang
Kui-Chin Liu
Yung-Lin Lin
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National Chung Shan Institute of Science and Technology NCSIST
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National Chung Shan Institute of Science and Technology NCSIST
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Assigned to NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY reassignment NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, HAN-HSIANG, LIN, YUNG-LIN, LIU, KUI-CHIN
Publication of US20190105763A1 publication Critical patent/US20190105763A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/101—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for hand-driven screw-drivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/02—Screwdrivers operated by rotating the handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means

Definitions

  • the present invention relates to a clamping device and, more particularly, to a screw clamping device for clamping screws.
  • some conventional screw clamping devices feature a screwdriver with a tip made of a resilient material.
  • the resilient screwdriver tip is of a special shape and is deformed as soon as the screwdriver is pressed downward under a force.
  • the resilient screwdriver tip thus deformed clamps or releases a screw.
  • the resilient screwdriver tip in operation is deformed too little to enable the screwdriver tip to come into contact with a screw.
  • the deformed resilient screwdriver tip is of too low mechanical strength to clamp a screw tightly, thereby causing the screw to loosen.
  • the other conventional screw clamping devices feature a movable mechanism for controlling a chuck to open and shut but have disadvantages as follows: inconvenient to use (because manual operation is required) and structurally complicated.
  • Another objective of the present invention is to provide a screw clamping device coupled to a screwdriver by modularization to further broaden the application of the screw clamping device.
  • the present invention provides a screw clamping device which comprises a body, a pressing unit, a resilient unit, a clamping unit and a connecting unit.
  • the body is a hollow-core cylinder, is subject to axial penetration of a screwdriver, and is movable axially in synchrony with rotation of the screwdriver.
  • the pressing unit is pressed against the body and adapted to press against a surface of a working object.
  • the resilient unit is disposed between the body and the pressing unit.
  • the clamping unit is rotatably connected to the body.
  • the connecting unit has one end connected to the pressing unit and the other end connected to the clamping unit. The connecting unit drives the clamping unit to rotate while the body is moving axially.
  • the body While a user is operating the screwdriver, the body is driven to move, whereas the connecting unit drives the clamping unit to rotate and thereby clamp or loosen the screws.
  • the clamping unit comprises at least a clamping arm with an end in the form of a C-shaped object.
  • an end of the pressing unit comprises an L-shaped object.
  • an end of the body has a plurality of dents for receiving the pressing unit and the clamping unit.
  • the body has an inner wall, and the screwdriver is in tight contact with the inner wall for fixing the body.
  • the clamping arms are in the number of two and symmetrically arranged on the clamping unit, with the two C-shaped objects formed at the two clamping arms, respectively, obliquely in opposite directions.
  • the present invention provides a screw clamping device which comprises a body, a fixing unit, a pressing unit, a resilient unit, a clamping unit and a connecting unit.
  • the body is a hollow-core cylinder which is subject to axial penetration of a screwdriver.
  • the fixing unit is connected to the body axially and fixed with the screwdriver, and the fixing unit is driven to press against the body to move axially when the screwdriver is rotating.
  • the pressing unit presses against the body and is adapted to press against a surface of a working object.
  • the resilient unit is disposed between the body and the pressing unit.
  • the clamping unit is rotatably connected to the body.
  • the connecting unit has one end connected to the pressing unit and another one end connected to the clamping unit. The connecting unit drives the clamping unit to rotate while the body is moving axially.
  • the screw clamping device uses the fixing unit to push the body to move axially.
  • the screwdriver only driving the fixing unit to rotate, and the body, the pressing unit, the clamping unit and the connecting unit only move up and down. Therefore, the screw clamping device is more stable in the operation.
  • the clamping unit comprises at least a clamping arm with an end in the form of a C-shaped object.
  • an end of the pressing unit is an L-shaped object.
  • an end of the body has a plurality of dents for receiving the pressing unit and the clamping unit.
  • the fixing unit comprises a plurality of screws penetratingly disposed at the fixing unit to press against the screwdriver.
  • the clamping arms are in the number of two and symmetrically arranged on the clamping unit, with the two C-shaped objects formed at the two clamping arms, respectively, wherein the two C-shaped objects are oblique in opposite directions.
  • FIG. 1 is a schematic view of a screw clamping device according to an embodiment of the present invention
  • FIG. 2 is an explode view of the screw clamping device of FIG. 1 ;
  • FIG. 3 is a schematic view in another perspective of the screw clamping device of FIG. 1 ;
  • FIG. 4 is a clamping schematic view of the screw clamping device of FIG. 1 ;
  • FIG. 5 is a schematic view of operation of the screw clamping device of FIG. 1 ;
  • FIG. 6 is a schematic view of operation of the screw clamping device of FIG. 1 ;
  • FIG. 7 is an unclamping schematic view of the screw clamping device of FIG. 1 ;
  • FIG. 8 is an expanded schematic view of a clamping unit of the screw clamping device of FIG. 1 ;
  • FIG. 9 is an expanded schematic view of the clamping unit of the screw clamping device of FIG. 1 ;
  • FIG. 10 is a restored schematic view of the screw clamping device of FIG. 1 ;
  • FIG. 11 is a schematic view of the screw clamping device according to another embodiment of the present invention.
  • the screw clamping device 1 comprises a body 11 , a fixing unit 12 , a pressing unit 13 , a resilient unit 14 , at least two clamping unit 15 and at least two connecting unit 16 .
  • the body 11 includes a head part 111 and a hollow-core cylinder 112 .
  • the head part 111 is disposed at a first end of the cylinder 112 .
  • the cylinder 112 has an axial direction for a screwdriver to be fixed along the axial direction.
  • the head part 111 has a diameter larger than a diameter of the cylinder 112 .
  • the head part 111 has four dents d.
  • the fixing unit 12 is disposed on the second end of the cylinder 112 and rotates relative to the body freely.
  • the fixing unit 12 comprises a plurality of screws 121 that penetrating the fixing unit 12 .
  • the pressing unit 13 includes a sleeve portion 131 and a pressing portion 132 .
  • the sleeve portion 132 is sleeved on the cylinder 112 .
  • the pressing portion 132 is an L-shaped object.
  • the pressing portion 132 is connected to the sleeve portion 131 and is received in the dents d of the body 11 for pressing against the surface of a working object 30 .
  • the resilient unit 14 is disposed on the cylinder 112 , and one end of the resilient unit 14 pressing sleeve portion 131 .
  • the clamping unit 15 is disposed in the dents d and is received in the dents d of the body 11 .
  • the two clamping units 15 are symmetrically arranged thereon.
  • the clamping unit 15 comprises a clamping arm 151 and a C-shaped object 152 .
  • the clamping arm 151 is disposed in the dent d.
  • the C-shaped objects 152 are disposed at one end of the clamping arms 151 , respectively, obliquely in opposite directions.
  • the connecting unit 16 is with a long strip shape, and one end of the connecting unit 16 is connected to the sleeve portion 131 . And the other end is connected to the clamping arms 151 .
  • FIG. 3 through FIG. 9 there are shown schematic views of operation of the screw clamping device 1 according to the aforesaid embodiment of the present invention.
  • the screw clamping device 1 fits around a screwdriver 20 , the screwdriver 20 penetrates the body 11 and fixing unit 12 axially and is coupled to the fixing unit 12 through screws 121 .
  • the intended screw 40 is placed at one end of the screwdriver 20 , and then both the screwdriver 20 and the screw 40 are moved to the working object 30 .
  • FIG. 5 the intended screw 40 is placed at one end of the screwdriver 20 , and then both the screwdriver 20 and the screw 40 are moved to the working object 30 .
  • the screw 40 is clamped and fixed to one end of the screwdriver 20 , allowing the screw 40 to be driven into the working object 30 while being rotated by a user.
  • the fixing unit 12 is move down according to the rotation of the screwdriver 20 and pressing the second end of the cylinder 112 , and head part 111 is moving down. Since the pressing portion 132 presses the working object 30 and the sleeve portion 131 is fixed, the head portion 111 is separated from the sleeve portion 131 .
  • the connecting unit 16 is stretched to make the two C-shaped objects 152 of the two clamping units 15 relatively separated.
  • the two C-shaped objects 152 are no longer clamping the screw 40 .
  • FIG. 8 in the situation where the user keeps driving the screw 40 into the working object 30 by rotating the screw 40 , the rotation of the screwdriver 20 causes the screw 40 to be driven into the working object 30 but does not cause the body 11 to rotate, because the body 11 and the fixing unit 12 are movable.
  • the body 11 compresses the resilient unit 14 and move downward along the screwdriver 20 ; as a result, the connecting unit 16 drives the clamping unit 15 to rotate and stretch outward, thereby releasing the screw 40 .
  • FIG. 8 in the situation where the user keeps driving the screw 40 into the working object 30 by rotating the screw 40 , the rotation of the screwdriver 20 causes the screw 40 to be driven into the working object 30 but does not cause the body 11 to rotate, because the body 11 and the fixing unit 12 are movable.
  • the body 11 compresses the resilient
  • the clamping unit 15 is no longer clamping the screw 40 after the screw 40 has been driven into the working object 30 .
  • the pressing unit 13 becomes a fixing end of the resilient unit 14 as soon as the screw 40 is screwed in or out of the working object 30 , and in consequence the body 11 moves upward while restoration of the initial state of the resilient unit 14 is taking place; hence, again, the connecting unit 16 drives the clamping unit 15 to rotate and thereby restore or clamp the screw 40 . Therefore, the screw clamping device 1 of the present invention prevents the screw 40 from falling off or even getting missing while being loosened or tightened. Furthermore, the screw clamping device 1 of the present invention can be coupled to the screwdrivers 20 of different sizes to further broaden the application of the screw clamping device 1 .
  • the present invention dispenses with the fixing unit 12 as described below.
  • the inner wall of the body 11 is made of an elastic material, such as rubber. After penetrating the body 11 , the screwdriver 20 stretches the body 11 and thus is in tight contact with the inner wall of the body 11 . Owing to the friction between the inner wall and the screwdriver 20 , the screwdriver 20 and the body 11 are fixed to each other.
  • the body 11 , the resilient unit 14 , the pressing unit 13 , the connecting unit 16 and the clamping unit 15 each rotate together with the screwdriver 20 .
  • the screw clamping device 1 rotates about the screw 40 without collisions, because the screw 40 is located at the center of each of the two clamping units 15 .
  • the present invention dispenses with the fixing unit 12 , thereby further simplifying the structure of the screw clamping device 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Jigs For Machine Tools (AREA)
US15/874,073 2017-10-06 2018-01-18 Screw clamping device Active 2039-05-03 US10906162B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW106134568A TWI632031B (zh) 2017-10-06 2017-10-06 Screw clamping device
TW106134568A 2017-10-06
TW106134568 2017-10-06

Publications (2)

Publication Number Publication Date
US20190105763A1 US20190105763A1 (en) 2019-04-11
US10906162B2 true US10906162B2 (en) 2021-02-02

Family

ID=62530118

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/874,073 Active 2039-05-03 US10906162B2 (en) 2017-10-06 2018-01-18 Screw clamping device

Country Status (4)

Country Link
US (1) US10906162B2 (ja)
EP (1) EP3482880B1 (ja)
JP (1) JP6886427B2 (ja)
TW (1) TWI632031B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109396601B (zh) * 2018-12-13 2021-06-11 北京无线电测量研究所 一种微带片式功分器的焊接辅助装置
US20200368884A1 (en) * 2019-05-22 2020-11-26 Robert Rivera Screw Mount and Locking Device
CN111451972B (zh) * 2020-05-26 2021-06-29 广东电网有限责任公司东莞供电局 拆卸工具

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424703A (en) * 1921-11-12 1922-08-01 Joseph V Work Screw-driver attachment
US1575149A (en) * 1925-02-11 1926-03-02 James L Craig Screw holder and driver
US1779339A (en) * 1929-07-09 1930-10-21 Boris N Sokoloff Screw driver
US2576742A (en) * 1947-11-20 1951-11-27 Wolny Joseph Screw holding screw driver
US3949795A (en) * 1975-06-16 1976-04-13 Hull Donald G Sink clip inserting device
US3965950A (en) * 1975-03-20 1976-06-29 Macdonald Murdo A Fastener driver and fastener holding nosepiece
US6244141B1 (en) * 1998-08-10 2001-06-12 Ki Su Han Fastener holding device
US6314845B1 (en) * 2000-02-24 2001-11-13 Shu Te Wu Clamp for screwed fastening member
US7069826B2 (en) * 2004-10-08 2006-07-04 Mike Tilton Screwdriver attachment
KR20160100481A (ko) * 2015-02-14 2016-08-24 이진영 나사의 흔들림을 방지하는 나사드라이버

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US2399138A (en) * 1944-03-07 1946-04-23 Nygaard Christ Screw holding attachment for screw drivers
DE1241380B (de) * 1960-08-09 1967-05-24 Alfred Schlotter Werkzeug zum Einschrauben von Kopfschrauben, insbesondere von selbstbohrenden Blechtreibschrauben
JPS5633278A (en) * 1979-07-12 1981-04-03 Okubo Seisakusho Kk Driver
JPS6261473U (ja) * 1985-10-03 1987-04-16
JPS6332769U (ja) * 1986-08-19 1988-03-02
JPH02218563A (ja) * 1989-02-14 1990-08-31 Toshiba Corp ねじ回し
JPH0539869U (ja) * 1991-10-31 1993-05-28 日新電機株式会社 ドライバ
JPH0711276U (ja) * 1993-07-26 1995-02-21 克成 杉山 ドライバー用のビスキャッチ治具
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Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424703A (en) * 1921-11-12 1922-08-01 Joseph V Work Screw-driver attachment
US1575149A (en) * 1925-02-11 1926-03-02 James L Craig Screw holder and driver
US1779339A (en) * 1929-07-09 1930-10-21 Boris N Sokoloff Screw driver
US2576742A (en) * 1947-11-20 1951-11-27 Wolny Joseph Screw holding screw driver
US3965950A (en) * 1975-03-20 1976-06-29 Macdonald Murdo A Fastener driver and fastener holding nosepiece
US3949795A (en) * 1975-06-16 1976-04-13 Hull Donald G Sink clip inserting device
US6244141B1 (en) * 1998-08-10 2001-06-12 Ki Su Han Fastener holding device
US6314845B1 (en) * 2000-02-24 2001-11-13 Shu Te Wu Clamp for screwed fastening member
US7069826B2 (en) * 2004-10-08 2006-07-04 Mike Tilton Screwdriver attachment
KR20160100481A (ko) * 2015-02-14 2016-08-24 이진영 나사의 흔들림을 방지하는 나사드라이버

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Also Published As

Publication number Publication date
EP3482880B1 (en) 2021-03-17
TWI632031B (zh) 2018-08-11
US20190105763A1 (en) 2019-04-11
EP3482880A1 (en) 2019-05-15
TW201914766A (zh) 2019-04-16
JP6886427B2 (ja) 2021-06-16
JP2019069504A (ja) 2019-05-09

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